/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.expression;
/**
* Super class for exceptions that can occur whilst processing expressions
*
* @author Andy Clement
* @since 3.0
*/
public class ExpressionException extends RuntimeException {
protected String expressionString;
protected int position; // -1 if not known - but should be known in all reasonable cases
/**
* Creates a new expression exception.
* @param expressionString the expression string
* @param message a descriptive message
*/
public ExpressionException(String expressionString, String message) {
super(message);
this.position = -1;
this.expressionString = expressionString;
}
/**
* Creates a new expression exception.
* @param expressionString the expression string
* @param position the position in the expression string where the problem occurred
* @param message a descriptive message
*/
public ExpressionException(String expressionString, int position, String message) {
super(message);
this.position = position;
this.expressionString = expressionString;
}
/**
* Creates a new expression exception.
* @param position the position in the expression string where the problem occurred
* @param message a descriptive message
*/
public ExpressionException(int position, String message) {
super(message);
this.position = position;
}
/**
* Creates a new expression exception.
* @param position the position in the expression string where the problem occurred
* @param message a descriptive message
* @param cause the underlying cause of this exception
*/
public ExpressionException(int position, String message, Throwable cause) {
super(message,cause);
this.position = position;
}
/**
* Creates a new expression exception.
* @param message a descriptive message
*/
public ExpressionException(String message) {
super(message);
}
public ExpressionException(String message, Throwable cause) {
super(message,cause);
}
public String toDetailedString() {
StringBuilder output = new StringBuilder();
if (expressionString!=null) {
output.append("Expression '");
output.append(expressionString);
output.append("'");
if (position!=-1) {
output.append(" @ ");
output.append(position);
}
output.append(": ");
}
output.append(getMessage());
return output.toString();
}
public final String getExpressionString() {
return this.expressionString;
}
public final int getPosition() {
return position;
}
}
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